Priority check-in is a prime service offered by airlines and travel companies to their premium customers, allowing them to skip the long queues and hassle at the airport. Synonyms for priority check-in include express check-in, fast-track check-in, expedited check-in, premium check-in, VIP check-in, and priority boarding. These services are usually offered to frequent flyers, business class passengers, and members of loyalty programs. The main benefit of priority check-in is time-saving, as the passengers can enjoy a seamless and stress-free travel experience. The availability of priority check-in varies by airline and route, so it is essential to check with your carrier beforehand.